I am working on a BLE client and I see function esp_err_t esp_ble_gattc_open(esp_gatt_if_t gattc_if, esp_bd_addr_t remote_bda, bool is_direct) suceeds only with gattc_if = 0x03 . I tried finding relevant documentation and walking through the forums and found nothing definite. My asumption is esp_gat...